/* NEXTGROW WITH AI — company identity layer (v2.5)
   Adds: hero identity copy, philosophy roles, HOW WE BUILD OUR COMPANY OS,
   and the INSIDE NEXTGROW WITH AI page. Builds on site.css tokens; changes nothing there. */
:root{
  --cyan:#7cc6ff;
  --cyan-deep:#2f66d8;
  --cyan-line:rgba(124,198,255,.38);
}

/* ---------- shared ---------- */
.nav a{white-space:nowrap}
.nav{gap:clamp(16px,2vw,34px)}
.link-arrow{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:inherit;padding-bottom:6px;border-bottom:1px solid currentColor;transition:gap .25s var(--ease),color .25s}
.link-arrow svg{width:14px;height:14px;flex:none;transition:transform .25s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow.cyan{color:var(--cyan);border-bottom-color:var(--cyan-line)}
.light .link-arrow.cyan{color:var(--cyan-deep);border-bottom-color:rgba(47,102,216,.35)}
.btn-line{border-color:rgba(255,255,255,.5)}
.btn-line svg{width:14px;height:14px}
html[lang="ko"] .link-arrow{letter-spacing:.04em}
.num{font-variant-numeric:tabular-nums}

/* ---------- MAIN: hero identity ---------- */
.hero-identity{margin:30px 0 0;max-width:34em;font-size:clamp(1.08rem,1.35vw,1.28rem);line-height:1.5;color:var(--text);font-weight:500}
.hero-identity+.hero-sub{margin:12px 0 34px;max-width:36em;font-size:clamp(.96rem,1.08vw,1.05rem);line-height:1.6}
@media (min-width:1025px){.hero-actions-desktop{display:flex;align-items:center;gap:28px;flex-wrap:wrap}}
.hero-actions-desktop .btn{min-height:50px}
@media (max-width:1024px){
  .hero-identity{margin-top:22px}
  .hero-identity+.hero-sub{margin:10px 0 0}
  .hero-actions .btn-line{flex:0 1 auto}
}

/* ---------- MAIN: philosophy roles ---------- */
.philo-roles{margin:0 0 30px;padding:0;list-style:none;border-left:2px solid var(--dark);max-width:30em}
.philo-roles li{display:grid;grid-template-columns:64px 1fr;gap:4px 14px;align-items:baseline;padding:8px 0 8px 18px}
.philo-roles li+li{border-top:1px solid rgba(11,17,25,.1)}
.philo-roles b{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--dark)}
.philo-roles span{font-size:15px;color:var(--dark-dim)}
.philo-roles li.ai b{color:var(--cyan-deep)}
html[lang="ko"] .philo-roles b{letter-spacing:.06em}
.philo .link-arrow{color:var(--cyan-deep);border-bottom-color:rgba(47,102,216,.35)}
.philo-copy{max-width:36rem}

/* ---------- MAIN: HOW WE BUILD OUR COMPANY OS ---------- */
.osb{position:relative;overflow:hidden;isolation:isolate;background:#060a10;padding-block:clamp(84px,9vw,136px) clamp(64px,7vw,104px)}
.osb-sky{position:absolute;inset:0 0 auto 0;height:clamp(320px,38vw,600px);z-index:-1;pointer-events:none}
.osb-sky picture,.osb-sky img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 100%}
.osb-sky::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,16,.78) 0%,rgba(6,10,16,.2) 34%,rgba(6,10,16,.05) 70%,#060a10 100%),linear-gradient(90deg,rgba(6,10,16,.94) 0%,rgba(6,10,16,.82) 36%,rgba(6,10,16,.3) 66%,rgba(6,10,16,.05) 100%)}
.osb-head{max-width:58rem}
.osb .eyebrow{color:var(--cyan)}
.osb h2{margin:0 0 26px;font-size:clamp(2rem,3.5vw,3.3rem);line-height:1.06;letter-spacing:-.02em;font-weight:700}
.osb h2 .soft{color:rgba(244,246,248,.6)}
.osb .lead{max-width:38em;margin:0}
.osb .lead strong{color:var(--text);font-weight:600}
.osb-steps{list-style:none;margin:clamp(56px,6vw,88px) 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:osb;border-top:1px solid var(--line)}
.osb-steps li{position:relative;padding:28px clamp(14px,1.8vw,28px) 6px 0}
.osb-steps li+li{padding-left:clamp(14px,1.8vw,28px);border-left:1px solid var(--line)}
.osb-steps li::before{content:"";position:absolute;top:-1px;left:0;width:0;height:2px;background:var(--cyan);transition:width 1.1s var(--ease)}
.osb-steps.in li::before{width:44px}
.osb-steps li+li::before{left:clamp(14px,1.8vw,28px)}
.osb-steps .n{display:block;font-size:12px;letter-spacing:.14em;color:var(--cyan);margin-bottom:14px}
.osb-steps h3{margin:0 0 10px;font-size:clamp(1.15rem,1.55vw,1.5rem);font-weight:700;letter-spacing:.02em;text-transform:uppercase;line-height:1.1}
.osb-steps p{margin:0;font-size:14.5px;line-height:1.55;color:var(--text-dim);max-width:15em}
.osb-steps li:not(:last-child)::after{content:"";position:absolute;top:31px;right:-5px;width:9px;height:9px;border-top:1.5px solid var(--text-mute);border-right:1.5px solid var(--text-mute);transform:rotate(45deg);background:#060a10;z-index:1}
.osb-foot{margin-top:clamp(40px,5vw,64px);padding-top:26px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px 40px;flex-wrap:wrap}
.osb-chain{margin:0;font-size:clamp(1rem,1.25vw,1.15rem);font-weight:600;color:var(--text);display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center}
.osb-chain i{font-style:normal;color:var(--cyan)}
.osb-foot .more{display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.osb-foot .more small{font-size:12px;color:var(--text-mute);letter-spacing:.06em}
@media (max-width:1024px){
  .osb-steps{grid-template-columns:1fr 1fr}
  .osb-steps li,.osb-steps li+li{padding:24px 18px 26px 0;border-left:0}
  .osb-steps li:nth-child(even){padding-left:18px;border-left:1px solid var(--line)}
  .osb-steps li:nth-child(n+3){border-top:1px solid var(--line)}
  .osb-steps li::after{display:none}
  .osb-steps li+li::before{left:0}
  .osb-steps li:nth-child(even)::before{left:18px}
  .osb-steps li:last-child{grid-column:1/-1;border-left:0;padding-left:0}
  .osb-steps li:last-child::before{left:0}
}
@media (max-width:560px){
  .osb-steps{grid-template-columns:1fr}
  .osb-steps li,.osb-steps li:nth-child(even){padding:22px 0;border-left:0;display:grid;grid-template-columns:44px 1fr;gap:2px 8px}
  .osb-steps li:nth-child(even)::before{left:0}
  .osb-steps li+li{border-top:1px solid var(--line)}
  .osb-steps .n{grid-row:span 2;margin:3px 0 0}
  .osb-steps p{max-width:none}
}

/* ---------- MAIN: business framing ---------- */
.biz .lead strong{color:var(--text);font-weight:600}
.card-stage{display:block;margin:-8px 0 12px;font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute)}
.card.is-active .card-stage{color:var(--ok)}
html[lang="ko"] .card-stage{letter-spacing:.04em}

/* ---------- INSIDE PAGE ---------- */
.ins-hero{position:relative;min-height:min(100svh,900px);display:flex;align-items:flex-end;overflow:hidden;isolation:isolate;background:#05080c}
.ins-hero-media{position:absolute;inset:0;z-index:-1}
.ins-hero-media picture,.ins-hero-media img{display:block;width:100%;height:100%;object-fit:cover;object-position:62% 50%}
.ins-hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,8,12,.94) 0%,rgba(5,8,12,.78) 30%,rgba(5,8,12,.2) 62%,rgba(5,8,12,.15) 100%),linear-gradient(0deg,rgba(5,8,12,.92) 0%,rgba(5,8,12,0) 45%),linear-gradient(180deg,rgba(5,8,12,.7) 0%,rgba(5,8,12,0) 22%)}
.ins-hero .wrap{width:100%;padding-top:calc(var(--header-h) + 72px);padding-bottom:clamp(64px,8vw,112px)}
.ins-hero .eyebrow{color:var(--cyan);letter-spacing:.3em}
.ins-hero h1{margin:0;font-size:clamp(2.6rem,6.2vw,6rem);line-height:.96;font-weight:700;letter-spacing:-.025em;text-transform:uppercase}
.ins-hero .sub{margin:22px 0 0;font-size:clamp(1.2rem,1.9vw,1.75rem);font-weight:600;letter-spacing:-.005em;color:var(--text)}
.ins-hero .body{margin:22px 0 0;max-width:34em;font-size:clamp(1rem,1.15vw,1.1rem);line-height:1.65;color:var(--text-dim)}
.ins-hero .body b{color:var(--text);font-weight:600}
.ins-rail{position:absolute;right:var(--gutter);top:calc(var(--header-h) + 64px);list-style:none;margin:0;padding:0;font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;line-height:2;color:var(--text-dim)}
.ins-rail::after{content:"";display:block;width:28px;height:1px;background:var(--line-strong);margin-top:16px}
.ins-index{list-style:none;margin:clamp(40px,5vw,64px) 0 0;padding:22px 0 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 26px;font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.ins-index a{text-decoration:none;color:var(--text-mute);transition:color .2s}
.ins-index a:hover{color:var(--text)}
.ins-index span{color:var(--cyan);margin-right:8px}
html[lang="ko"] .ins-index{letter-spacing:.03em}

.ins-sec{padding-block:clamp(80px,9vw,140px)}
.ins-sec.dark{background:var(--ink-2)}
.ins-sec.deep{background:#060a10}
.ins-sec.dark+.ins-sec.dark,.ins-sec.deep+.ins-sec.deep{border-top:1px solid var(--line)}
.sec-no{display:flex;align-items:center;gap:14px;margin:0 0 22px;font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--text-mute)}
.sec-no b{font-weight:600;color:var(--cyan);letter-spacing:.08em}
.light .sec-no{color:var(--dark-mute)}
.light .sec-no b{color:var(--cyan-deep)}
html[lang="ko"] .sec-no{letter-spacing:.06em}
.ins-h{margin:0;font-size:clamp(2rem,4.2vw,3.9rem);line-height:1.02;font-weight:700;letter-spacing:-.022em;text-transform:uppercase}
html[lang="ko"] .ins-h{line-height:1.14;letter-spacing:-.03em}
.ins-h .soft{color:rgba(244,246,248,.5)}
.light .ins-h .soft{color:rgba(11,17,25,.42)}
.ins-lead{margin:26px 0 0;max-width:36em;font-size:clamp(1.02rem,1.25vw,1.18rem);line-height:1.65;color:var(--text-dim)}
.light .ins-lead{color:var(--dark-dim)}
.ins-lead+.ins-lead{margin-top:14px}
.ins-lead b{color:var(--text);font-weight:600}
.light .ins-lead b{color:var(--dark)}
.ins-split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,96px);align-items:end}

/* 01 why */
.why{position:relative;overflow:hidden}
.why-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,96px);align-items:center}
.why-q{margin:28px 0 0;font-size:clamp(1.5rem,2.6vw,2.4rem);line-height:1.2;font-weight:600;letter-spacing:-.015em;color:var(--dark);max-width:18em}
.why-q::before{content:"“";display:block;font-size:1.6em;line-height:.6;color:var(--cyan-deep);margin-bottom:10px}
.why-visual{position:relative;margin:0;aspect-ratio:4/3.1;overflow:hidden;border-radius:var(--radius);background:#0b111a}
.why-visual img{width:100%;height:100%;object-fit:cover;object-position:62% 40%}
.why-visual figcaption{position:absolute;left:24px;bottom:22px;right:24px;font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;line-height:1.9;color:rgba(255,255,255,.88)}
.why-key{margin-top:clamp(44px,5vw,72px);padding-top:26px;border-top:1px solid rgba(11,17,25,.14);display:grid;grid-template-columns:auto 1fr;gap:10px 40px;align-items:baseline}
.why-key strong{font-size:clamp(1.25rem,1.9vw,1.7rem);line-height:1.25;color:var(--dark);letter-spacing:-.01em}
.why-key strong em{font-style:italic;color:var(--cyan-deep)}
.why-key p{margin:0;color:var(--dark-dim);font-size:15.5px;max-width:34em}

/* flows (02, 05, 07) */
.flow{list-style:none;margin:clamp(48px,6vw,80px) 0 0;padding:0;display:grid;grid-template-columns:repeat(var(--n,5),minmax(0,1fr));position:relative}
.flow::before{content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line-strong)}
.light .flow::before{background:rgba(11,17,25,.2)}
.flow li{position:relative;padding:36px clamp(10px,1.6vw,24px) 0 0}
.flow li::before{content:"";position:absolute;left:0;top:4px;width:11px;height:11px;border-radius:50%;background:#060a10;border:1.5px solid var(--cyan)}
.light .flow li::before{background:var(--paper);border-color:var(--cyan-deep)}
.dark .flow li::before{background:var(--ink-2)}
.flow li:first-child::before{background:var(--cyan)}
.light .flow li:first-child::before{background:var(--cyan-deep)}
.flow .k{display:block;font-size:11.5px;letter-spacing:.14em;color:var(--text-mute);margin-bottom:8px}
.light .flow .k{color:var(--dark-mute)}
.flow h3{margin:0 0 8px;font-size:clamp(1rem,1.35vw,1.28rem);font-weight:700;letter-spacing:.03em;text-transform:uppercase;line-height:1.15}
.flow p{margin:0;font-size:14px;line-height:1.55;color:var(--text-dim);max-width:16em}
.light .flow p{color:var(--dark-dim)}
.flow-return{margin:34px 0 0;display:flex;align-items:center;gap:14px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute)}
.flow-return svg{width:22px;height:22px;stroke:var(--cyan);fill:none;stroke-width:1.4}
.light .flow-return{color:var(--dark-mute)}
.light .flow-return svg{stroke:var(--cyan-deep)}
html[lang="ko"] .flow-return,html[lang="ko"] .flow .k{letter-spacing:.04em}

/* 02 testbed */
.testbed .statement{margin:clamp(56px,6vw,88px) 0 0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.testbed .statement div{padding:26px 28px 0 0}
.testbed .statement div+div{padding-left:28px;border-left:1px solid var(--line)}
.testbed .statement b{display:block;font-size:clamp(1.3rem,2vw,1.8rem);font-weight:700;text-transform:uppercase;letter-spacing:.01em;margin-bottom:8px}
.testbed .statement span{font-size:14.5px;color:var(--text-dim);line-height:1.55}

/* 03 real businesses */
.lab-signals{list-style:none;margin:clamp(40px,5vw,56px) 0 0;padding:20px 0;border-block:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;font-size:clamp(.95rem,1.4vw,1.25rem);font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text)}
.lab-signals li{display:flex;align-items:center;gap:clamp(12px,2vw,28px)}
.lab-signals li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--cyan)}
html[lang="ko"] .lab-signals{letter-spacing:0}
.lab-grid{margin-top:clamp(40px,5vw,64px);display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,1.4vw,20px)}
.lab{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:clamp(320px,30vw,440px);overflow:hidden;border-radius:var(--radius);background:#05080c;isolation:isolate;text-decoration:none;color:var(--text)}
.lab picture,.lab img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.lab::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(0deg,rgba(5,8,12,.96) 0%,rgba(5,8,12,.72) 38%,rgba(5,8,12,.1) 72%)}
.lab.muted img{filter:saturate(.72) brightness(.82)}
.lab-body{padding:22px 22px 24px}
.lab .badge{margin-bottom:14px}
.lab h3{margin:0 0 8px;font-size:clamp(1.02rem,1.25vw,1.2rem);font-weight:700;letter-spacing:.02em;text-transform:uppercase;line-height:1.2}
.lab p{margin:0;font-size:14px;line-height:1.55;color:var(--text-dim)}
.lab-note{margin:20px 0 0;font-size:13px;color:var(--text-mute)}

/* 04 company os */
.os-diagram{margin-top:clamp(48px,6vw,80px);display:grid;grid-template-columns:1fr auto 1.25fr auto 1fr;align-items:stretch;gap:0;background:#070b11;color:var(--text);border-radius:6px;overflow:hidden}
.os-node{padding:clamp(26px,3vw,44px)}
.os-node h3{margin:0 0 18px;font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--text-mute)}
.os-node ul{list-style:none;margin:0;padding:0;font-size:clamp(1.05rem,1.5vw,1.4rem);font-weight:600;line-height:1.7}
.os-node.core{background:linear-gradient(160deg,#0f1a2a 0%,#0a1220 100%);border-inline:1px solid rgba(124,198,255,.2)}
.os-node.core h3{color:var(--cyan)}
.os-node.core ul{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
.os-node .note{margin:22px 0 0;font-size:13px;line-height:1.55;color:var(--text-mute);font-weight:400}
.os-arrow{display:grid;place-items:center;width:clamp(36px,4vw,56px);color:var(--cyan)}
.os-arrow svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.5}
.os-points{margin-top:clamp(36px,4vw,56px);display:grid;grid-template-columns:repeat(3,1fr);gap:24px 40px}
.os-points div{padding-top:18px;border-top:1px solid rgba(11,17,25,.16)}
.os-points b{display:block;font-size:15px;color:var(--dark);margin-bottom:6px}
.os-points span{font-size:14.5px;color:var(--dark-dim);line-height:1.55}

/* 05 how we build the OS */
.build .flow{--n:7}
.build .flow h3{font-size:clamp(.92rem,1.15vw,1.12rem)}
.build .flow p{font-size:13.5px}
.quote-line{margin:clamp(56px,6vw,88px) 0 0;padding:clamp(28px,3.4vw,44px) 0 0;border-top:1px solid var(--line);font-size:clamp(1.4rem,2.6vw,2.4rem);line-height:1.22;font-weight:600;letter-spacing:-.015em;max-width:26em}
.quote-line span{color:var(--cyan)}

/* 06 learning */
.learn-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,96px);align-items:start}
.chain{list-style:none;margin:0;padding:0;counter-reset:c}
.chain li{position:relative;display:grid;grid-template-columns:44px 1fr;gap:0 18px;align-items:center;padding:0 0 30px}
.chain li:not(:last-child)::after{content:"";position:absolute;left:21px;top:40px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--cyan-line),rgba(124,198,255,.08))}
.chain .dot{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:11px;letter-spacing:.06em;color:var(--text-mute)}
.chain li.os .dot{border-color:var(--cyan);color:var(--cyan)}
.chain b{font-size:clamp(1.05rem,1.45vw,1.3rem);text-transform:uppercase;letter-spacing:.04em}
.chain li.os b{color:var(--cyan)}
.chain small{display:block;font-size:13.5px;color:var(--text-mute);font-weight:400;text-transform:none;letter-spacing:0;margin-top:2px}
.honest{margin-top:30px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);font-size:14px;line-height:1.6;color:var(--text-dim);max-width:34em}
.honest b{color:var(--text)}

/* 07 grow */
.grow .flow{--n:5}
.grow-lines{margin-top:clamp(48px,6vw,72px);display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid rgba(11,17,25,.16)}
.grow-lines div{padding:22px 24px 0 0}
.grow-lines div+div{padding-left:24px;border-left:1px solid rgba(11,17,25,.12)}
.grow-lines b{display:block;font-size:clamp(1.05rem,1.5vw,1.35rem);text-transform:uppercase;color:var(--dark);letter-spacing:.02em;margin-bottom:6px}
.grow-lines span{font-size:14.5px;color:var(--dark-dim)}
.grow-plus{margin:22px 0 0;font-size:14px;color:var(--dark-mute)}

/* final CTA */
.ins-cta{position:relative;overflow:hidden;isolation:isolate;background:#060a10;padding-block:clamp(110px,12vw,180px) clamp(90px,10vw,140px)}
.ins-cta .sky{position:absolute;inset:0;z-index:-1}
.ins-cta .sky picture,.ins-cta .sky img{width:100%;height:100%;object-fit:cover;object-position:50% 100%}
.ins-cta .sky::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,16,.55) 0%,rgba(6,10,16,.08) 40%,rgba(6,10,16,.25) 78%,rgba(6,10,16,.7) 100%),linear-gradient(90deg,rgba(6,10,16,.86) 0%,rgba(6,10,16,.55) 40%,rgba(6,10,16,.05) 75%)}
.ins-cta h2{margin:0;font-size:clamp(2.3rem,5vw,4.6rem);line-height:1;font-weight:700;letter-spacing:-.025em;text-transform:uppercase}
html[lang="ko"] .ins-cta h2{line-height:1.12}
.ins-cta .lead{margin:24px 0 36px}
.ins-cta .partner{margin:0 0 30px;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
html[lang="ko"] .ins-cta .partner{letter-spacing:.06em}

.page-nav-back{display:inline-flex;align-items:center;gap:10px;margin-top:22px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute);text-decoration:none}
.page-nav-back:hover{color:var(--text)}

/* nav current page */
.nav a[aria-current="page"],.mobile-menu a[aria-current="page"]{color:var(--text)}
.nav a[aria-current="page"]{box-shadow:inset 0 -1px 0 var(--cyan)}

@media (max-width:1180px){
  .os-diagram{grid-template-columns:1fr}
  .os-arrow{width:auto;height:44px}
  .os-arrow svg{transform:rotate(90deg)}
  .os-node.core{border-inline:0;border-block:1px solid rgba(124,198,255,.2)}
  .build .flow{--n:4;row-gap:36px}
  .build .flow::before{display:none}
  .lab-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1024px){
  .ins-rail{display:none}
  .ins-hero{min-height:auto}
  .ins-hero-media::after{background:linear-gradient(0deg,rgba(5,8,12,.97) 0%,rgba(5,8,12,.82) 45%,rgba(5,8,12,.25) 100%)}
  .ins-hero .wrap{padding-top:calc(var(--header-h) + clamp(180px,40vw,320px))}
  .why-grid,.learn-grid,.ins-split{grid-template-columns:1fr}
  .why-key{grid-template-columns:1fr}
  .flow{--n:3 !important;row-gap:34px}
  .flow::before{display:none}
  .testbed .statement,.os-points,.grow-lines{grid-template-columns:1fr}
  .testbed .statement div,.testbed .statement div+div,.grow-lines div,.grow-lines div+div{padding:20px 0;border-left:0}
  .testbed .statement div+div{border-top:1px solid var(--line)}
  .grow-lines div+div{border-top:1px solid rgba(11,17,25,.12)}
}
@media (max-width:640px){
  .flow{grid-template-columns:1fr;row-gap:0;padding-left:0}
  .flow li{padding:0 0 26px 30px}
  .flow li::before{top:5px}
  .flow li:not(:last-child)::after{content:"";position:absolute;left:5px;top:20px;bottom:4px;width:1px;background:var(--line-strong)}
  .light .flow li:not(:last-child)::after{background:rgba(11,17,25,.18)}
  .flow p{max-width:none}
  .lab-grid{grid-template-columns:1fr}
  .lab{min-height:260px}
  .lab-signals{justify-content:flex-start}
  .ins-index{gap:8px 18px}
  .os-node.core ul{grid-template-columns:1fr 1fr}
  .osb-foot{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){.osb-steps li::before{width:44px}}

@media (max-width:1300px){.nav{gap:16px}.nav a{font-size:12px;letter-spacing:.1em}}
@media (max-width:1180px){.nav{gap:14px}.nav a{letter-spacing:.06em}}
.btn svg{width:14px;height:14px;flex:none}
@media (max-width:640px){
  .lab-signals{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}
  .lab-signals li{gap:10px}
  .lab-signals li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--cyan)}
}
.osb-now{margin-top:clamp(36px,4vw,52px);display:grid;grid-template-columns:1.25fr 1fr;gap:18px 48px}
.osb-now p{margin:0;font-size:15px;line-height:1.65;color:var(--text-dim);max-width:40em}
.osb-now b{color:var(--text);font-weight:600}
.os-today{margin:clamp(28px,3vw,40px) 0 0;padding:20px 22px;border-left:2px solid var(--cyan-deep);background:rgba(47,102,216,.06);font-size:15.5px;line-height:1.65;color:var(--dark-dim);max-width:62em}
.os-today b{color:var(--dark)}
@media (max-width:1024px){.osb-now{grid-template-columns:1fr}}

/* ---------- MAIN: company introduction film (philosophy section) ---------- */
.main-intro{margin:6px 0 40px;max-width:960px}
.main-intro video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:#0b0f14;border-radius:10px}
.main-intro figcaption{margin-top:10px;font-size:13px;letter-spacing:.04em;color:var(--dark-mute)}